Wood heat treatment in glycerin atmosphere
DOI:
https://doi.org/10.4336/2016.pfb.36.88.1183Keywords:
Biodiesel, Hygroscopicity, ColorimetryAbstract
This study aimed to evaluate heat treatment of wood under glycerin atmosphere, that is residue of biodiesel industry, and indicate uses of the product in different wood markets. Six Eucalyptus grandis and E. cloeziana trees were selected from homogeneous plantation with 21 years old. Wood samples taken from trees were laid in a laboratorial-scale oil bath with glycerin at 50 °C and they were heat-treated in glycerin atmosphere at 125 °C and 165 °C for 30 min. Control treatment was not heat-treated. Mass loss, changes in equilibrium moisture content and maximum water absorption were measured. Colorimetric parameters were determined by CIEL*a*b* system. A completely randomized design was applied, considering two temperatures and control treatment. Heat treatment in glycerin atmosphere decreased the equilibrium of moisture content and resulted in darker wood surface. Although heat-treated wood with glycerin shows restrictions related to water contact, it can be used indoors.Downloads
References
Akyildiz, M. H. & Ates, S. Effect of heat treatment on equilibrium moisture content (EMC) of some wood species in turkey. Research Journal of Agriculture and Biological Sciences, v. 4, n. 6, p. 660-665, 2008.
American Society for Testing and Materials. Standards methods of testing small clear specimens of timber: D143-94. In: ______. Annual book of ASTM standard. West Conshohocken, 2000.
Cademartori, P. H. G. et al. Effect of thermal treatments on technological properties of wood from two Eucalyptus species. Anais da Academia Brasileira de Ciências, v. 87, n. 1, p. 471-481, 2015. DOI: 10.1590/0001-3765201520130121.
Caldas, E. MAPA comemora alteração no biodiesel. 2014. Disponível em: <http://www.agricultura.gov.br/comunicacao/noticias/2014/05/mapa-comemora-alteracao-no-biodiesel>. Acesso em: 20 nov. 2015.
Charpe, T. W. & Rathod, V. K. Biodiesel production using waste frying oil. Waste Management, v. 31, n. 1, p. 85-90, 2011. DOI: 10.1016/j.wasman.2010.09.003.
Chen, Y. et al. The effect of heat treatment on the chemical and color change of black locust (Robinia pseudocacia) wood flour. BioResources, v. 7, n. 1, p. 1157-1170, 2012.
Conte, B. et al. Propriedades físicas e colorimétricas da madeira termorretificada de Pinus elliottii var. elliottii. Scientia Forestalis, v. 42, n. 104, p. 555-563, 2014.
Dasari, M. A. et al. Low-pressure hydrogenolysis of glycerol to propylene glycol. Applied Catalysis A: General, v. 281, n. 1-2, p. 225-231, 2005. DOI: 10.1016/j.apcata.2004.11.033.
Delucis, R. A. et al. Propriedades físicas da madeira termorretificada de quatro folhosas. Floresta e Ambiente, v. 21, n. 1, p. 99-107, 2014. DOI: 10.4322/floram.2014.008.
Dubey, M. K. et al. Changes in chemistry, color, dimensional stability and fungal resistance of Pinus radiata D. don wood with oil heattreatment. Holzforschung, v. 66, n. 1, p. 49, 2012. DOI: 10.1515/HF.2011.117.
Hill, C. A. S. Wood modification: chemical, thermal and other processes. Chichester: John Wiley & Sons, 2006.
Hill, J. et al. Environmental, economic, and energetic costs and benefits of biodiesel and ethanol biofuels. Proceedings of the National Academy of Sciences, v. 103, n. 30, p. 11206-11210, 2006. DOI: 10.1073/pnas.0604600103.
Knothe, G. Improving biodiesel fuel properties by modifying fatty ester composition. Energy & Environmental Science, v. 2, n. 7, p. 759-766, 2009. DOI: 10.1039/B903941D.
Nejad, M. et al. Coating performance on oil-heat treated wood for flooring. Bioresource. v. 8, n. 2, p. 1881-1892, 2013.
Pincelli, A. L. P. S. M. et al. Effect of thermal rectification on colors of Eucalyptus saligna and Pinus caribaea woods. Maderas: ciencia y tecnología, v. 14, n. 2, p. 239 - 249, 2012. DOI: 10.4067/S0718-221X2012000200010.
Quintella, C. M. et al. Cadeia do biodiesel da bancada à indústria: Uma visão geral com prospecção de tarefas e oportunidades para P&D&I. Química Nova, v. 32, n. 3, p. 793-808, 2009. DOI: 10.1590/s0100-40422009000300022.
Sundqvist, B. Color response of Scots pine (Pinus sylvestris), Norway spruce (Picea abies) and birch (Betula pubescens) subjected to heat treatment in capillary phase. European Journal of Wood and Wood Products, v. 60, n. 2, p. 106-114, 2002. DOI: 10.1007/s00107-001-0273-x.
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